Can the Nike + ipod sensor measure weight?

[xsecretfiles]

I was thinking about getting the nike _ ipod but I have a couple of questions

1. I heard the battery doesn't last longer than a year and we have to purchase a brand new sensor, is that true?

2. Can the sensor measure your weight and keep track of it automatically?

3. Does it tell you how many calories have you burned?

[SilentPanda]

2. I don't think it can. It's only in one shoe so it wouldn't be correct.

3. I think it can estimate off your weight you input and your pacing. But it won't be 100% accurate.

Not sure about the first one though.

[REBELinBLUE]

1. I heard the battery doesn't last longer than a year and we have to purchase a brand new sensor, is that true?
I believe the listed lifetime is 1000 hours

2. Can the sensor measure your weight and keep track of it automatically?
No

3. Does it tell you how many calories have you burned?
Yes, but since it doesn't have your gender, age or height it won't necessarily be as accurate as other systems